#include <stdio.h>
 int main()
 {
 	int i = 0;
 	int count = 0;
 	for (i = 0;i<=100;i++)
 	 { 
 	    if( i % 9 ==0 ) 
 	 	{
 	 		count++;
		  }
 	 	if(i / 9==0)
 	 	{
 	 		
 	 		count++;
 	 		
		  }
	  }
 	
 	printf("%d",count);
 	
 	
 	
 	
 	
 	
 	return 0;
 	
  } 
